Alert archive / Utah / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 12, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 24, 2012, 1:45 PM MDT for Washington County, Utah. It was in force for 18 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2012, 1:45 PM MDT (19:45 UTC)
- Expired
- Jul 24, 2012, 2:03 PM MDT
- In force
- 18 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Storm-based polygon
County Washington County, UT
The radar
The Cedar City radar (KICX), 70 km from the middle of the area, began a volume at 19:45 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Las Vegas, NV (KVEF), launched 12:00Z, 7.8 hours before the alert went out and 209 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2422 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
593 WUUS55 KSLC 241945 SVRSLC UTC053-242030- /O.NEW.KSLC.SV.W.0012.120724T1945Z-120724T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 145 PM MDT TUE JUL 24 2012 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL WASHINGTON COUNTY IN UTAH * UNTIL 230 PM MDT * AT 140 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 14 MILES SOUTHWEST OF HURRICANE...OR NEAR ST GEORGE...MOVING NORTHEAST AT 20 MPH. * LOCATIONS IN THE WARNING INCLUDE... HURRICANE THIS STORM PRODUCED A WIND GUST OF 62 MPH AT 130 PM AS IT CROSSED THE UTAH ARIZONA BORDER. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH AND/OR LARGE HAIL AT LEAST ONE INCH IN DIAMETER. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 3727 11332 3700 11316 3700 11356 3706 11359 TIME...MOT...LOC 1944Z 221DEG 18KT 3705 11351 $$ MPS
1 follow-up statement
714 WWUS55 KSLC 242003 SVSSLC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 203 PM MDT TUE JUL 24 2012 UTC053-242014- /O.CAN.KSLC.SV.W.0012.000000T0000Z-120724T2030Z/ WASHINGTON UT- 203 PM MDT TUE JUL 24 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL WASHINGTON COUNTY IS CANCELLED... THE STORM HAS WEAKENED AND IS NO LONGER SEVERE. THEREFORE THE WARNING HAS BEEN CANCELLED. LAT...LON 3727 11332 3700 11316 3700 11356 3706 11359 TIME...MOT...LOC 2004Z 221DEG 18KT 3713 11343 $$ MPS
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 8:58 AM MDT | Flash Flood Warning | SLC | Washington | 6 hr |
| Jul 24, 12:56 PM MDT | Flash Flood Warning | SLC | Garfield | 3 hr |
| Jul 24, 1:28 PM MDT | Flash Flood Warning | SLC | Wayne | 4 hr |
| Jul 24, 1:34 PM MDT | Special Weather Statement | SLC | Washington | 41 min |
| Jul 24, 2:44 PM MDT | Flash Flood Warning | SLC | Washington | 6 hr |
| Jul 24, 3:18 PM MDT | Special Weather Statement | SLC | Iron | 42 min |
Nearby
Severe Thunderstorm Warnings in Utah, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.